303380040818681 has 2 divisors, whose sum is σ = 303380040818682. Its totient is φ = 303380040818680.

The previous prime is 303380040818593. The next prime is 303380040818711. The reversal of 303380040818681 is 186818040083303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182522558828281 + 120857481990400 = 13510091^2 + 10993520^2 .

It is a cyclic number.

It is not a de Polignac number, because 303380040818681 - 2³⁸ = 303105162911737 is a prime.

It is a super-2 number, since 2×303380040818681² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (303380040814681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151690020409340 + 151690020409341.

It is an arithmetic number, because the mean of its divisors is an integer number (151690020409341).

Almost surely, 2^{303380040818681} is an apocalyptic number.

It is an amenable number.

303380040818681 is a deficient number, since it is larger than the sum of its proper divisors (1).

303380040818681 is an equidigital number, since it uses as much as digits as its factorization.

303380040818681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 303380040818681 in words is "three hundred three trillion, three hundred eighty billion, forty million, eight hundred eighteen thousand, six hundred eighty-one".